As title.. will they fit ok or be too big?

Thanks

235's on a 7.5J rim is the max suggested tyre width for the rim so you should be fine.

Arch what is max on an 8J rim?

Thanks Arch. Hopefully they will be fine sidewall wise as they as similar to R888s anyway!

Here's some help Banny...

http://www.toyo.co.uk/tire/pattern/id/4651

Or

245/40ZR17 91W 2G 2351180 5.0 627 250 8.00-8.5-9.50

245/40ZR18 93Y 3G 2360910 5.0 653 250 8.00-8.5-9.50

dunx

Min recommended is 215, ideal is 225 or 235 and max is 245. I use 235's on 8J rims. If you want to go wider than a 235 for track use you would be better going to a 9J rim.

Useful links below

http://www.tyres-pneus-online.co.uk/...es-advice.html

http://www.alloywheels.com/tyrecalc.asp

Cheers guys, will use the RE070s I have before moving on to some 235s